Revert usage of getZoom() when calculating TextExtent

This issue reverts the behavior of GC::textExtent to use the
GC::getZoom() instead of the zoom from the font as this results in a
regression.

Fixes #2361

Author: arunjose696

bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/SWTInternalConstants.java

@@ -0,0 +1,20 @@
+/*******************************************************************************
+ * Copyright (c) 2025 Yatta Solutions
+ *
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Yatta Solutions - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.swt.internal;
+
+public class SWTInternalConstants {
+
+	public static boolean strictChecks = System.getProperty("org.eclipse.swt.internal.enableStrictChecks") != null;
+
+}

bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/GC.java

@@ -5725,7 +5725,7 @@ void apply() {
  */
 public Point stringExtent (String string) {
 	if (string == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
-	return Win32DPIUtils.pixelToPoint(drawable, stringExtentInPixels(string), data.font.zoom);
+	return Win32DPIUtils.pixelToPoint(drawable, stringExtentInPixels(string), getZoom());
 }
 
 Point stringExtentInPixels (String string) {
@@ -5805,7 +5805,7 @@ public Point textExtent (String string) {
  * </ul>
  */
 public Point textExtent (String string, int flags) {
-	return Win32DPIUtils.pixelToPoint(drawable, textExtentInPixels(string, flags), data.font.zoom);
+	return Win32DPIUtils.pixelToPoint(drawable, textExtentInPixels(string, flags), getZoom());
 }
 
 Point textExtentInPixels(String string, int flags) {